Differences among improved farm practices as related to rates of adoption
Fliegel, F.C., Kivlin, J.E.
Differences among improved farm practices as related to rates of adoption - Pennsylvania 1962 - 18 p. - No. 691; Pennsylvania Agricult .
Differences among improved farm practices as related to rates of adoption - Pennsylvania 1962 - 18 p. - No. 691; Pennsylvania Agricult .